Power-operated shovel.



PATENTED AUG. 6

o. M. WBMBR.v POWER OPERATED sHovBL. APPLIOTION FILED MAR. 29, 1907.

11 SHEETS-SHEET 1.

PATENTED AUG. .6. 1907.

C. M. WEAVER. POWER OPERATED SHOVEL.

APPLICATION FILED MAR. 29. 1907.

l1 SHEETS-SHEET 2.

No. 862,427. l PATENTED AUG. 6, 1907.

0. M. WEAVER.

POWER OPERATED SHOVEL.

APPLIOATION FILED MAR. 29, 1907.

11 SHEETS-SHEET 3.

` i Stkoznm PATENTED AUG. 6, 1907.

C. M. WEAVER. PUWERUPERATBD sHovEL. APPLICATION IIYLED MAR. 29,1907.

11 SHEETS--SHEET 4.

witnesses Stratum;

PATENTED AUG.' 6, 1907,

C. M. WEAVER. POWER OPERATED SHOVEL.

APPLICATION FILED MAR.29, 1907.

11 SHEETS-SHEET 51 WLM/meow PATENTED AUG. 6, 1907.

C. M. WEAVER. POWER OPERATED SHOVEL. APPLIUATION FILED MAE. 29, 1907.

11 SHEETS-SHEET 6.

wbb/Lawa@ No. 862,427. PATENTED AUG. 6, 1907.

C. M. WEAVER.

POWER OPERATED SHOVEL.

A APPLIOATION FILED MAB.. 29, ,1907.

11 SHEETS-SHEET '7.

PATENTED AUG. 6, 1907.

C. M. WEAVER. POWER OPERATED SHOVEL. APPLIUATION FILED MAR.29,1907.

11' SHEETS-SHEET 8.

No. 862,427. EATENTED AUG. 6, 1907.

c. M. WEAVER. EOWEE OEEEATED sEovEL.

APPLICATION FILED MAR. 29, 1 907.

11 SHEETS-SHEET 9.

'Nm 862,427. l PATBNTED AUG. 6, 1907.

C. M. WEAVER.

POWER OPERATED SHOVEL. APPLIOATION FILED MAR. 29, 1901y 11 SHEETS-SHEET 1 0.

l r l WVM/wow v I E atkoulu No. 862,427. P'ENTED AUG.V6,A1907. C. M. WEAVER. POWEROPERATBD SHOVBL. APPLIOATION FILED MAR. 29. 1907. 1.1 SHEETSPSHBBT 1L Stroming;

UNITED .STATES PATENT oEEroE.

CHARLES M. WEAVER, OF-BESSElY-IIER, ALABAMA.'

POWER-OPERATED SHOVEL.

To all whom lit 'may concern:

Be it. knownthat I, CHARLES M. WEAVER, a citizen of the United States, residing at Bessemer, in the county of Jefferson and State oi Alabama, have invented a new and4 useful vPower-Operated. Shovel, of which the g following is-a specication.

. While the present invention'was devised more particularly with a view to handling coke, there is no question but that the same, and especially certain features hereinafter claimed, are lclearly usefulyfor other purposes. A u

p The primary object of the present invention is to provide novel, simple and effective mechanism for moving a shovel or other carrier in practically any desired direc; tion, so that thefsame may be readily loaded, the load transported, and said load deposited from the machine at different points..

A further and important object is to provide a powery operated traction or self-propelled machine, wherein detail sectional view on the line 4-4 oi Fig. 1.

the driving power may be wholly utilized, either for propelling the machine or for operating the shovel.

The preferred embodiment of the invention is disclosed inthe accompanying drawings, and is described in the following specification: It will'be evident, however, from an inspection of the appendedrclaims that the said invention is not limited to the structure disclosed. i l

In the drawings1-Figure 1 is 'aside elevation of the machine, the cab being 'illustrated in section. Fig. '2 is a plan viewof the bed frame of'the machine and associated mechanism. Fig. 3 is a cross sectional view through the'mast on the line 3-3 of Fig. l. 4 is a Fig. 5 is a vertical sectional view through the' upper journal bearing 'for the mast, andistaken on the line 5-5 of Fig. 1. Fig. 6 is a horizontal sectional view on the line 6-6 of Fig. 5.l Fig. 7 isal sectional View through the driving mechanism on `the line 7-7 of Fig. 2. Fig. 8

is a cross sectional View pn the line 8-8 of Fig. 7, showing one of the clutch mechanisms.

Fig. 9 is a view in elevation of the inner face of one of the driving gear wheels. Fig. 10 is a 'detail sectional view on the line 10--10 of Fig. 7. Fig.` l1 is a detail sectional view on a portion of the guide bracket and shifting stirrup or yok'e. Fig. 13 is a side elevation of the mast and boom operating means, portions thereof being shown in section. Fig. 14 is a sectional view at right angles to Fig. 13. Fig. 15 is a side elevation of the upper portion of the structure disclosed in Fig. 13, and on the opposite side to that disclosed in Fig. 13. Fig; 16 isa sectional view on the line 16-16 of Fig. 14. Fig. 17 is asimilar view to Fig. 16, but showing the ratchet wheel and retainer removed. Fig. 18 is a horizontal sectional 'View on the line 18-18 of Fig. 14. Fig. 19 is a similar view Specific-:ation of Letters Patent. Application ned March 29,1907. serial No. 365.358.

riage.

Patented Aug'. 6, 1907.

I on the line 19-19 of Fig. 414. Fig. 20 is a horizontal sectional view on the line 20-20 oi Fig. 14. Fig. 21 is a detail sectional view on the line 21-21 of 20. Fig. 22 is a sectional view on the line 22-,-22 of Fig. 21. Fig. 23 is a longitudinal sectional View through the inner end of the boom. Fig. 24 is a plan view of the inner end of the boom. Fig. 25 is a vertical sectional view` through the outer end of the boom. Fig. 26 is a top plan view of the outer end thereof with the bucket supporting frame shown in section. Fig. 27l is a detail elevation of one of the clutch tripping devices for the Carria e. Fig. 28 is a detail view of the automatic lock or the carriage.- Fig". 29 is a side elevation of' said carriage and a portion of the boom. Fig. 30 is an end. elevation of said carriage' with a cross sectional view of the boom. Fig. 31 is a longitudinalsectional view thgough the carriage onlthe line 31-31 of Fig. 30. Fig. 32 isva cross sectional view through the carriage and boom on the line 32-32 of Fig. 29. Fig. 33 is a detail side elevation of one of the sections of the car- Fig. 34 is a detail sectional view showing the axle bearing for one of the wheels. Fig. 35 is a longitudinal sectional View throughthe shovel. Fig. 36 is a planview of said shovel.' Fig. 37 is a front elevation of the rear gate of the bucket. Fig. 38'is a detail sectional view on the line 38-38 of Fig. 36.A Fig. 39 is a sectional view on the line 39-39 of Fig. 35. Fig. 40 is-a detail sectional view through the'latch of the i bucket gate. Fig. 41 is a detail-end elevation of one sov of the bearings for the rear or driving axle of the mai chine. Fig. 42 is a top plan view ofthe holding means for the steering wheel. Fig. 43 is a detail perspective view of the holding dog for said steering wheel. w Fig.

' 44 is an end elevation of the belt shifting and tightening means. Fig. 45 is a detail sectional view on the 1ine'45-45 of Fig.- 44. Fig. 46 is a detail sectional view through one of the rear driving wheels and asso; ciated mechanism for clutching the same to the rear shaft or axle. Fig. 47 is a view of the inner end of a driving wheel hub. Fig. 48 is an end view of a clutch mechanism, the shaft being shown insection. Fig. 49 is a detail. elevation of one of the clutch operating Amechanisms and associated parts. Fig. 50'is a horizontal sectional view on the line 50-50 of Fig. 49. Fig. 51 is a detail perspective View of the bell crank lever` constituting part oi the connection between the operating lever and the clutch. Fig'. 52 is also a detail cross sectional view on the line 39-39 of Fig. 35, but illustrating the lining placed inthe bucket. Fig:

A 53 is an end elevation of the lower portion ot the swinging link 14.

:Similar reference numerals designate correspond- 'ing parts in all the figures of the drawings. In the embodiment illustrated, a bed-frame is emplayed, which is designated generally by the reference numeral 1, and is formed of channel beams. Mounted on the rear portion of this frame is a cab 2o any desired form or' construction, which houses a: motor 3.

, dent to thoseskilled in the art that any means-,fior pro-" from the motor or engine 3, -throug-hthe medium of a. '.belt 5 or other driving connection, 'said belt passing While an explosive engine is preferred, it-will be eviducingpower may be employed. .'[ournaledon'the iront portion of the bed-frame and transversely thereof, vis a'main. drivingshaft 4, whicliireceives power around a pulley 6 on the engine shaft 7 andl about-a pulley 8 that is fixed to the driving shaft 4. Another pulley 9 is looselyjournaledon the shat4, andthe belt 5 can be shifted rom'the pulley-8' to said pulley 9.

[The machine is propelled by power transmitted through saidpulley 9, as hereinafter explained.

A shaft or rearaxle 10,y having its intermediate por-- (..tion s lquared, is provided with round'term'inal spindles 11, on which are journaled the hubs 12 of rear driving wheels 13.r Sleeves 14 are xed-tothe ends of the squared portion oi the shaft or axle andhave enlarged outer ends 15T' These sleeves arejournaled in boxings 16 secured. tov the underside of the channel hame, as

' clearly shown in Figs. 7, 41 and 46. Collars 18. are

located on the axle vat the inner ends of the sleeves 14` lan'dboxings 16. Mountedon the-squared portion of the shaft vbetween'the "collars 18 and spaced there# from by other collars 19, are hubs 21) yof spiders 21. vThese hubs 20 have their `inner portions insidethe `'spiders disposed ini abutting relation ,and rotatablymounted .thereon are" opposed bevel' gear wheels 22A providedvwith peripheral-rims 23 extending on the opposite sidesto the bevel-.teeth 24of wheels. A

' countershait 25', journaleddongitudinally vthe frame loose pulley 9, while-the rear end of .said shaft carries another bevel gear 28 that meshes with the-teeth 24 of y of the bed, Visprovided at its irontendfwith'abevel gear 26 meshing. with a gear 2 7v that is carried by the the' opposed gear wheels .22.` It willthus befevident that if' the belt 5 is shifted to the loose pulley l9, the' gear-wheels 22 will be revolved inlopposite directions'-`l by the power transmitted through-the countershaft 25 and gear wheel 28. In order that the power thus trans- 'ably mounted in bearings 3,1- on the arms oithe spiders'.

mitted to the gear wheels 22l may. in turn be transmitted'- from either of said gear wheels to thev rear shait or axle 45 ism is preferablyemployed. A` plurality of radially 10 carrying the drive wheels 13,l the following mechanmovableshoes 29 are carried by stems 30 that are slid- 21, andthe inner ends oi the stemsB are connected to toggle links 32, which are pivoted to ears 33, formed at the juncture of the hubs 20 and the' spiders 21.

Grooved collars 34 are keyed to and slidable upon the'v 'outer ends ofthe hubs 20 ofthe spiders 21, and have link connections 35 with the toggle links 32. A guide bracket 36 is' secured upon the frame of the machine,

as shown in Figs. 2, I7 and l2, and'is provided with a I longitudihal slot 37 disposed above and longitudinally of vthe axlev 10. In this sl t' are slidably mounted the depending arms l38 of a s ifting stirrup 39, and said arms have at their-lower ends, yokes 40, which engage in the grooves oi the ycolla'rs'34.. The upper cross bar oi the stirrup 39 is providedin its underside with I notches, in which'are rotatably mounted the axles 41.

oi rollers 42 that rido upon the bracket 36 on opposite sides of the slot 37. The central portion of the cross each of the vertical arms oi the yoke frame. ends of said vertical arms'areconneoted by a bolt 53, von' which is j ournaled an idler 54, over .which the lower the belt tightened.

baroi the stirrup is provided with a stud 43 engaged Aby one arm yof a bell crank lever 44, the other'arm having alink connection 45 "with a controlling or shifting lever 46, suitably fulcrumed on the iront portion of the `rrrachir-re-and having' a dog-17v coacting .with racks 48 disposed 'onopposite sides oi the lever, as will be evident by reference to Figs. land' 2.

Mea-n n are provided for shiftin tight'pulley 8- tothe yloose pulley 9, or vice versa, said vmeansalso constituting a belt tightener. This means is diseased in rigs. 2, 44ans 45. [1r-win be geen by reierence'to saidiigures that on the cross sill of the bedthe belt5 romthe rame are secured guidebrackets 49, in which is slidl .ably mounted a verticallyinovable yoke rame 50 that can be heldin different positions'by spring pins 51 slidably inol'inted, (mtl-1e 'brackets 49 and.v arranged toengage in vany of af's'eries o L openings 52' formed The lower stretch' ofthe ,bea 5 passes. A `lever '55', rulrumed between-its ends on the`` upper portionoi the yoke frame; carries a dog 56 that-coperatesl with a rack 57 vsecured to said frame. The lower end oi the lever is bfurcated, as shown at 58, and engages in'a groove59 ormed in the'hub .oi the idler. lt will thus be evident thatby swinging the lever 5 5, the idler54 will be moved longitudinallyY of the bolt 53,. and thus the belt 5,

frame 50, the idler be `shifted transversely. Furthermore by raising `.the

elevated, and consequently From the above, it win be clear that if the-'engine is'y in operation, and the belt 5 is shifted to the. loose piilley. 9, the countershaft 25 willr be driven, thus driving the wheels 22 in opposite directions. Thereioreif the lever 46 isl moved injone direction or the other, the stirrup frame 39 will be moved, and asa resultL-one oi the sets of clutch shoes'29will be ,thrown-into engagement with o ne oi'the wheels 22,',while the other will be moved to an inoperative position. lTherefore the machine may be propelled in lV either direction, yinasmuch as the shaft 10 of the 'drive Wheels'13can beA operated in 4either direction desired. Moreover, it

.will be observed in this connection that lthe full power of the engine will be. transmitted to the driving mechanism. v

The channel bar frame is curved, as shown at 60, and located therein is the'lower end of a tubular base 61, said base having an' outstanding annular ange 62 that restsupon the channel bar 60',` and is boltedthereto, as shown at 63.

constituting thefront vend -oi the.

Theupper endof the base 61 constitutes a track on' -which is rotatably mounteda turntable 64,-A tapered roller bearings 65 being interposed between the turntable and track, as shown in Figs. 13, 14 and 18. The

.said wheels running on tracks 71 formed by flanges on ng 'mechanism is preferably employod'ior l 2 5 the periphery of the tubular base. l A counter'shaft 72 is journaled in the rear side of'sai'd'. tubular base,. and

- has 'at its rear end a bevel'gear 73 meshing with another'bevel gear 74 fixed to the main driving shaftl 4."

Therefore the countershaft 72 will be revolved when the belt is in operation on4 the fixed pulley 8, Said countershalt' 72 is furtheimore providedwith another bevel gear 75, whic'his in mesh with the teeth 68 of the bands 67, as shown/in Figs.. 2 and 13. Thus said bands will berotated in opposite directio,ns. v l' 'Ihe turntable -64 carries at onev side a depending bracket' 76, and-fulcrumed between its ends on. the'.

. llower end .of said-bracket is a lever 77. The .lever is provided above-and below the fulcrum, which is, designated 78,J-With brakeor'clampig shoes 79 pivoted thereto land coperating respectively with the exterior vmounted on a `lug' 80carriedbyfthe bracket 76,' while the lower shoe is suspended from the upper shoe by 20 perend. ofthe lever- 77 has-a link connection 82 with the crankarm 83 of a .rock shaft 84 journaled on av links, one `of which-.isshown at81 in 13. The u'p bracket 85 onthe turntablaandsaid vrockI shaft icarries an upstanding c rankLarm'Sd-having a link,connecti on' 87- withanfactuating 'level;; 88, fulcrumed at its lower end, as shown aty89onthe turntable, and having a .dog

the lever'85` in .one 'direction/or the othei,'"one 'o1-the therof theV shoes :79 be swunginto clamping en gageinent" with one of said bands.. A sf' af" result the turnta-b1e64 will be fixed to. said fhand, andiconsequentlysaid turntablevk can be rotated in'f'eith'er direction by the proper operation of the lever 88..

The'above described turntable constitutes a support fora-.mast and vboom, and `for thispurpos'e, said turntable is provided with1spac'edupstanding brackets 93,

*to which is secured aiforwardly and upwardly inclinedy ArmsA 99, strapped as shown at` lOOto the upper and formed 'of spaced channel bars with the ilanges turnedv inwardly, as shown in Fig.v 3,l andgit` has-an upperjo'urnal bearing inthe roofo'f the icab. f To this4 end,`a

strong/supporting beam 951s located' in said roof, and is provided with a boxing 96 inwhich is rotatably mounted a vertical tubular spindle 97, the axis thereof being coincident with the airis of rotation ot the turntable. Rollers V98 are preferably provided for the bearing.`

I 'lower ends of the spindle 97 aboveand below the beam and boxing 96, have their outer .ends suitably secured, as shown at 101 to themast. The boom, designated as a Whole by the referencenumeralj102, is piv7 otallysupported at the lower `en d of the mast, and comprises spaced side lbars or beams 103 carrying at their outer ends a supporting frame ythat consists of standards 104 connected by longitudinal bars 105, and braced as shown at 106. A chain or cable 1 07 is secured to the rear upper corner of the supporting frame, and passes over' a pulley or sheave 108 journaled in a bracket 109 that is carried by the upper end of the mast 94.` This Fig.v 14, and is provided with'a peripheral rim 118 withl which a series of shoes' 119 coperate, said shoes having ychain or cable 107 is secured to an Iendless-chain or cable 110 that extends longitudinally of the mast 94,

and has its upper end passing around a crown pulley or sheave 111 journaled in the bracket 109, the bearing -for said pulley being preferably a anged sleeve 112 mounted oil-a bolt 113, as shown in Fig. 4. The lower end ofthe chain or cable 110 passes abouta sheave 114 that issecured to the hub 115 of a carrier 116. A bevel gear wheel 117 .is journaled on said hub, as shown in stems 120 slidably mounted in the carrier 116. yThe stems 120 have connected thereto, `toggle links 121 connected with a shifting collar 122 which is operated by a horizontally' disposed leversizs, Shown in Figs. 2, 15 and 16.." It willthus be evident that by shifting the lever 123,

the shoesr119 can'be engaged with the gear wheel 117 so that the sheave 114 will be clutched to said gear'wheel, and the two will, of necessity, rotate together. The stems-120 of the shoes 1,19 are maintained in place on the carrierl'l by means of aratchet wheel 124 shown in Figs.

14 and 16. Coperating with the teeth of this ratchet wheel, is a spring pressed holdingdog 125 having a connectio'n with a bell crank lever 126, one arm of which is provided with a foot-piece 127. The gear wheel 117 is inmesh with a pinion 128 carried by the upper end of a stub shaft 129 journaled' centrally in the turntable v64 '1 ,and carrying at its lower end a large bevel gear wheel 130 that is located inthe tubular base 61'.k The gear Wheel 130, as shown in Fig. 13, is in mesh with a bevel Y pinion 131 carried by the inner end of the icou'ntershaft 7 2. lTherefore if said countershait 72 is in motion, 'the gear wheel 13 0 will be revolved, thereby ryolving the shaft 129, ,thepinion 128,and consequently thegear wheel i117. AIt-W'ill thus be evident thatif the gear wheel l17 is in operation, the sheave114 may-'be ,clutched thereto, and whenlso clutched, the chain 110 willbefmovedjso that the stretch'the'reof to which the chain'107 is connected, will be drawn downwardly; thus elevating the boom 102, Itsfretrograde movement, when lu'nclutcl'1ed,'is prevented by the dog 125 engaging theteeth ofthe ratchet wheel 124, and` byre' leasingsaid dog, the boom 102 wil-l' drop by its own.

weight. The .rapidityoi such movement is'readily vcontrolled bythe" lever 123, forv it will'be evident that'- the shoes 119 can be used to act as a brake'against the too rapid retrograde rotation of the sheave 114.4

carrier,v or materialfholding means. In. the ,present embodiment, the same is in effecta grated shovel comprising a bottom and side walls composed ofspaced rods or barsy 132 secured attheir ends to lframe-.pieces 133. A lining as 132, see Fig. 52.1nay be employed, l land is detachably located inthe shovel when the shovel or holder is used in moving dirt, 'sand or other Y lloose substance. .The iront end of theshovel'or holder is open and tapered, as illustrated in Figs. 1 and 35, while the rear end is 'normally closed by a swinging gate'134 lcontrolled by a springlatch '135 mounted on the gate and engaging in a keeper136, as shown in Figs.' 35 and 40. The latchf135has a connection with a bell cranklever 137, to which may be attached an ac# tuating lcord 138. The bucket or holder furthermore is provided with a hanger composed of straps 139 disposed in' braced relation, andhaving their fr-ec ends 'Mounted on the outer end of the boom 102 is a shovel, I

that embrace the hook 1411, and are pivoted thereto as shown at 141. This latch is arranged to move across the open mouth of the hook, and is urged to its closed position by springs 1411. The leaves of the latch are providedwith outstanding projections 141 that are arranged to ride upon the beveled ends 141i on the ends of the bars-103. Said outstanding projections engage innotches 141g formed inthe beveled ends. The' end 140 of the hanger is furthermore provided with a transversely disposed axle, on the ends of which are journaled rollers 140, and these rollers are arranged to run upon the tracks, as hereinafter set forth. Certain of the straps 139 are continued rearwardly and upwardly from the bucket or holder, and are provided with an 'eye`l42 pivotally connected .to the depending ears '143 4of a carriage, designated as a Whole by the reference numeral 144, which carriage is movablelongitudinallyponthe boom, as hereinafter explained.

Extending longitudinally of the boom 102'is an endless chain 145, which passes at its outer end around a sheave 146 suitably journaled on the 'outer end of the boom and passesat the inner end of the boom around I a sheave 147 that is secured to a bevel gear 148. loosely journaled on the bolt 149 carrying the operating means -or the chain 110. The bevel gear 148 is driven by the pinion 128 carried by the upper end of the stub shaft 129, as already described. Thus as long as said stubshait -129 is in motion, the gear wheel 148 ywill be revolved, and consequently thechain 145 willbe in conetant movement. y j

The carriage 144, to which reference has already been-made, consists of two sections 150 andv 151, suit ably secured together and supporting upper and lower axles 152 on which are journaledupper and lower sets of wheels 153, the upper set running on the upper edge of the side members 103 of the boom, the lower set operating on tracks 154 formed by the inturned flanges of plates 155 secured to the side members 103 oi the boom.

vThe carriage is provided with suitable passageways side members 103 of the boom, as shown in Fig. 32.

The ends of the jaws are provided'with seats 1615.150 rekceive the links of the chain 145, and said jaws are arranged to clamp against the chains and force them into engagement with the carriage section 150{as hereinafter set forth.

Extending longitudinally between the side members 103 of the boom, is a rock-shaft 161 suitably journaled therein, .as shown at 162, and passing through the .tu-4 bular gudgeon 1592 This shaft .161 is provided in opposite sides with longitudinal key-ways 163, which,

while disposed in opposite sides, are not diametrically opposite, as will be noted by reference to Figs. 30 and 32. The lower or inner end of the shaft 161 is provided with a segmental gearf164, and meshing therewith is another segmental gear 165 carried bya shaft 166 that also carries a crank arm 167, these parts being shown in Figs. 23 and 24. A link 168, connected to the crank arm 167, has a connection with an operating lever 169, suitably fulcrumed upon a bracket 170, carried by the inner end of the boom, the lever being disposed in convenient relation to the-operator upon the seat 92. It will thus be evident that by swinging the lever 16,9, thev shaft may be partially rotated in either direction. Now by referring to Figs. 29 and 32, it will be seen that the j clutch lever 158 carries a pair of pivoted dogs 171 having ,teeth 172 that pass through the tubular gudgeon 159, and are movable into the longitudinal key-ways 163. However', when one of said teeth are in its keyway, the other is out of the same, as shown in Fig. 32, but said teeth are urged towards the shaft by springs 173, interposed between their outer ends. A rib 174,

carried by the tubulargudgeon is disposed between the pivoted portions of the .dogs 171, and serves to limit their inward movement. erence to Fig. 32, that even when the tooth of the lower dog 171 is in its .key-way 163, the lower jaw 158 oi the clutch will be out of coaction with the chain.

The tails or outer ends of the dog 171 project be yond the carriage, as shown vin Figs. 30 and 31, and disposed in the pathpf movement of each tail are trips illustrated in Figs. 25, 26 and 27. As therein disclosed, said trips comprise hooks 175, having seats 176, and mounted on swinging arms 1,7 7 that are pivoted on one of the*I side members 103, the hooks being yieldingly and normally held in lowered relation by springs 178. As shown in Fig'. 25, these' trips are disposed in opposite relation, and lthey are so arranged that the outer'one will engage one of the dogs 171, while the inner trip will engage the other. Mounted on the y other member 103, and directly opposite to the outer trip is a locking device, shown in detail in 28. l As therein disclosed, this locking device consists of a hook h179 pivoted between its ends, as shown at 180, the bill 181 being forced downwardly by a spring 182. A swinging arm 183, pivoted on the side member 103 at one'l end, and as shown at 184, hasits other end up. turned and pivotallyconnected as shown at 185 to the end o the hook 179 oppositethe bill 181. With this hook, the lug 160 coperates, as hereinafter explained.

The operation of the carriage may bev briefly described as follows. Remembering that the chain 145 is in continuous operation, it will of course be evident I that the upper and lower stretches are moving in opposite directions. Moreover, as the boom is pivoted v on the ends of the bolt 149 on which the wheel 147 is journaled, thefupright swinging movement oi the boom` will not affect the said chain inits movements. As long as the clutch arms 1581 are disposed in the relation shown in Fig. 32, the chaincan move freely through the carriage, and said carriage will therefore be at a standstill. 1i, new, the lever 169 is moved in one direction, it will be evident that the rock shaft 161 will be turned. As the lower tooth 172 is in lower keyway 163, the lower jaw 158 will be swung so as to clamp against the lower stretch ot' the chain. Therefore, if

loo

ment will cause the dog 171 to 'swing upon its pivot,.

and `carry the tooth 172 out of the key-way 163 of the rock shaft 161. The dog'17l strikes the. rib 174, and' will cause the rotation of the clutch, and thereforefree the same from the chain, which continues to operate.

The movement -of. theclutch is continued until the tooth of the upper dog 171 is engaged inthe upper key-way 163, but at this point, the upper jaw 158 will still be out of coaction'withthe upper stretch of the chain, or in other words, will be just the reverse of thatshown in Fig'. 32. t the completion of the eut` ward movement of the carriage, the lug 160 rides under thebill ofthe locking hook 181 and engages in the lock, asshown 28,`said view being a reverse' view from thatsliown in the plan in Fig. 26. The carriage is now in its outermost positionat which stage the nose of the shovel will be elevated, as 'shown in Fig.` 1. To reverse the movement ofthe carriage, or in other words, carry it toward the inner end of the boom, and thereby depress .the n'oseor open end of the carriage, a reverse. swinging movementof the lever 169 is all that is necessary, for upon said rev'rse movement, the shaft 161 will be turned so as -to carrythe upper jaw 158. into coacton with the upper stretchl of the chain, it being rememberedl that Ithe tooth 1720i the upper dog 171 is now in the upper key-way 163.

This forced swinging movement of the clutch will of 'course result in the rotation of the gudgeon 159 of said clutch, consequently the 1ug160 will be swung, press'- ing upon the lower arm 183, and thereby raising the v bill of the hook 181until it isfreed lfrom the lug. The' carriage therefore will be free -of the lock and will be clamped to the opposite'moving stretch'of the chain.

orf cable, so that it will be 4'moved downwardly until the tail of the upper dog 171 strikes the lower trip, which will reverse theparts, and leave them again in the position shown in Fig; f32, at which position v,the

parts were assumed to be, at thel beginning of the description of the operation. 1n .this connection, it will be observed that by operatingthelever 169, the car-- riage can beunclutched from either stretch of the' chain or cable at any point`desired. During the back and forth movement of the carriage 144,` it will be obscrvedthat 'the link 141 will be swung, but when the carriage is moving rearwardly or toward the inner end of the boom', it will be notedlby reference particularly to Fig. 25 that the hooked end of th'e link will swingA between the tracks 4155. Therefore the outstanding projections 141c oi the latch will ride up the inclined edges 141I of said track, and engage in thenotches 141K. The hanger will consequently be released, and

' the rollers 140n will run rearwardly upon lthe tracks.

When a reverse movement takes place, the parts will rengage and the link will swing outward, as will be obvious. Thus, it will bev seen that means are pro" vided for raising and lowering the boom and for ele' vating and-dumping the shovel or carrier upon said boom, all of said means being controlled bysimplge levers in convenient relation to the operator, all of said .mechanism` being mounted on a turntable, and urthermore all being driven from the single sh'aft 4. Means also are provided directly below the turn-table and the operating mechanism above described for guid` within the lower portion of the base161, vthe same comprising a continuous axle 187 and another axle comprising sections 188 disposed at right angles to the axle 187.

vThesemlxles have their intermediate portions located within a keeper 189, and the inner ends of the sections 188 are disposed on opposite sides of the central portion of the axle 187..v A cap 190 is disposed thereover,

188` are furthermore connected bya tie device 192 that bridges the axle 187, l'and 'has downturned terminals engaged in the sections 188. These axles carry at their outer ends Banged wheels 193, which, as shown in Figs. 1 3 and 14 operate against the underside of the track 186', thereby forming vin effect a fifthv wheel.` The keeper.

.189 is provided withdepending spaced ears 194, be

tween which extends the iront axle195'of the machine, saidaxle a'central enlargement 196, throughl whichpasses a pivot bolt 197 that also'passes through the' depending ears'194. Oni-the ends of the axle 4195 are jounaled the iront ground wheels 198 oi the machine, the ends of the axle 195 being connected by a cable or chain 199, which passes around a guide sheave 200, journaled on the frontL end of the frame, while another chain or'cable 201 hav-ing its ends connected to the ends of the axle-'195, passes about a sheave or pulley 202 carried by thelower end offen upright shaft 2013, suitably journaled in -tlie frame and having'a hand wheel 204 on its upper end. This shaft, as shown inA Figs. 41 and 42 ,is provided contiguous to the floor of the cab with a moth wheel 205,`and ,eoperating with=the 'and-is secured to the keeper by bolts191. The sections l los"- teeth of said whee is a tooth 206 o'f-'a pivoted dog207.

This dog isfpivota y mounted between'its ends, one" end being providedy with a foot-piece'208, thejotherv l" shown in detailin Fig. A43. With this construction, it f end being-provided' with a weight 209. `The dog lis 110 willbe evident that as long as the tooth 206 of the dog'l 207 lisi-engaged between :adjacent teeth ofthe wheel 205, l l the shaft 203V will' be heldagainst rotation, but4 if said wheel is'released by pressing upon the ootpiece ,2080i the dog', the shaft 203.will be free and can be revolved by means of the hand wheel 204, thus' turning the axle 4for the purposeof steering the machine. The pressure i' upon the foot-piece being relieved, however, the `weight 209 will .cause the tooth 206 of said dog to again engage between the teeth of the wheel 205`andv lock it,

andconsequently the wheels in their adjustedy relation. 1

For the purpose oi unclutching either or both of the, driving wheels 13 fromk the driving axle or shaft 10, the following mechanism is preferablyy employed. ,The' inner? end of the hubof each wheel 13 is-provided with i aser-ies of seats 2,10, shown `more particularly in Fig, 47, and the enlarged ends 15 ofthe associated sleeves 14'have pivoted thereto, dogs211 that are movi able into and out o f. the seats. These 'dofgs are actuated by rings 2l2 that surround outstanding projections g213 3s suficiently tovavoid breakage of the parts, and assoon on the pivoted ends ofthe dogs,- said projections being l engaged in annular grooves l21,4 formed in the inner sides of the rings. The rings 212 are connected to stems 215 that are slidable in the trame oi the machinelongi-- tudinally of the driving axle or shaft 10, and the inner ends of these stems are connected to the rearwardly extending arms 216 oi beil'crank levers 217. The other arms 218 oi the bell crank levers have. their free ends pivotally connected to sliding blocks 219 mounted in'l yokes 220,"and these yokes have link` connections 221.-

with .thelo'wer ends of actuating levers 222,'said levers being ulcr'urned between their ends, as shown at' 22 3,`

Y,outermost positions, .in which case, .the dogs will be f swung inwardly, and their outer ends lwill be engaged .in the seats 210 o ithe wheeihubs. Therefore the wheels will be fixed to tileshait oral-de now, it isdesired to free either or both of the wheels romfsaid shaft, it is l only necessary to draw the'flevero rglevers 222`r'ear--` ward-13gy inwhich case, .the inner arms 218 of .the bell crank levers will lee-"swung` forwardly, the stems 215 will be moved inwardly, and the rings 212 correspondingly moved. This will canse the dogs to swing out of the seats. If the leve arethrown orward1y,the dogs will be returned and case lthe seats 210 are not in'position to receive the dogs, the sprii'gs 223 will yieldas the seats 210`aline lwith thefdogis, "saidjsprings will operate to move them into th'eseats.-`

From vthe foregoing, 'it is thought that the construction, operation, andmany vadvantages of the herein `described invention, be apparent to those skilled in the art, withoutfurther description, and it will be understood that various changes in4 the size, shape, proportion, and minor details' or construction, may be resorted to without' departinghjomthespirit or sacriiieing any oi the advantages of the invention. I

-Having thus fully described my invention, what I claim as new, land-desire to secure by Letters Patent,

1. In a machineof thecharacter set forth, the combina# tion with a support, of abase mounted thereon, a carrier rotatably mounted on the base, and means movably mounted on the ibase forrotating th'e carrier. l

2. ln a .machine of the character'set forth, the combination with a rotatable turntable, of a revoluble member fdr rotating the same, means for continuously revolving said member, and means /for connecting the turntable thereto.

3, In a machine lof the character set forth, the combination with a turntable, of a revoluble member for rotating the same, means for continuously revolving said member, and means mounted on `the turntable for connecting the same to the revolubie member. v

4. In a machine of t-he'character set forth, the combina- -tlon with a'tui'ntuble, of an operating member for the turntable revoluble independently of said turntable, means v forrevolving the member, and means for securing the turntable and member against relative rotation.

5. In a machine of the character set forth, the combination with a turntable,.of an operating member for the turn table revolubie independentlyl of said turntabie,means for revolving the member, and a clutch shoe mounted on. the turntable and movable into engagement with the member to connect the turntable and member;l

'6. Ina machine of the character set forth, the combina- 'ition with a turntable, of a revoluble operating-member therefor having-its Iaxis of rotation substantiallyl coincident with that of the turntable, means for revolving the member, and means for detachabiy connecting the vturntable and member` '7..In-a machine ofy thecharacter set forth, the combination with aturntable, of an independently revoluble operating member theretor having an upright axis of rotation, and being'disposed beiow'the turntable, means for revolv ing the member, and means for detachably securing the turntableand member against relative movement.

8. in a machine ofthe c haracterset forth, the combi-nav tion witha turntable, 'of a revoluble band, and a clutch device for securing the brandend-turntable together.

9. In av machine of the character "set forth, the combinatidnlwitn a base, of a turntable rotatably mounted on the base, arevoluble operating member mounted on the base and movable independently of the 'turntable, `means for revolving the member, and meansfor securing the turntable and membenagainst relative movement. v

10s, In a machine of the character set forth, the combination with a base, oi'ra turntable rotatably mounted on the base, a revoiuble operating band surrounding thebase' and movable independently of the turntable,j and means for securing the turntable tothe band.

11. In'a machine of the' character set forth,the combination with a base, Aof a tuintablerotatably mounted en the base, 'a revgluble operritlng band surrounding the base and movable independently of the turntable, and a clutch shoe mounted on one and engaging the other for securing, the. turntable to the band..

' 12. In a machine of the character set forth, the combina,- tion wit-ira base, of a turntable rotatably mounted on the base,va revoluble' operating band surrounding the base and movable independently of the turntable, a clutch shoe movably mounted on the turntabie and movable into engagement with the band, and-means mounted on the turntable for moving the shoe. 13. In'a machine of the-character set forth, the combination with a base, of a turntable mounted on4 the upper portion thereof, a band surroundingthe base' and revoluble independently of the turntable, means for revolving the band, a swinging clutch shoe mounted onthe turntable and lmovable into engagement with the band to`secure the turn table thereto, an operating lever fulcrumed on the turnv table, and connections between said lever and the shoe.

14. In a machine of the character set forth, the combination with a base, of a turntablel rotatably mounted on the upper portion thereof, a Vband'surrounding thefoase and revolubie independently of the turntable, said band having gear teeth, means mounted on the turntable for connecting said'turntable to the band, a shaft journaled in the base, means for rotating the ysliaft,iand a gear wheel 'carried by said sha-ft and` meshing with the teeth of the band.

15. In a machine of the character set forth, the combination'witii a base, of a turntable rotatably mounted thereon, said basa-having a track, a revoiuble operating band having bearings on the track, means for revolving the band, and means for connecting the turntable to .the band.

16. In a machine of the character set forth, the combinationwith a base, of a'turntable rotatably mounted tlierebn, said base having an annular track, a revoluble band surL rounding the base, wheels carried by the band and operating on lthe. track, means engaging the band for revolving the same, and means for clutching the turntable 'and band.

together.

17. In a mach'ineof the-characterl set forth, the .combination with a supporting frame, of a base secured thereon and' having an annular track, a rotatable turntable mounted, on`the upper end of the base and having a roller bearing thereon, an ,operating band surrounding the buse below the turntable and having wheels running on the track of the base, a swinging clutch shoe mounted on the turntable and movable into and out of engagement with the band, an operating. lever fulerumed on the turntable and having cousea-127 18. In a machinepf the character set forth, the combination with a rotatable carrier, of oppositely revoluble operating memberstherefor, means for connecting the 'rotatable carrier to the members, and means for revolving said members in opposite directions.

19. In a machine of 'the character set forth, the combination with a rotatable carrier, of oppositcly revolving-operating means therefor, and means for connecting the rotatable carrier to Aeither member., v

, 20. In a'machine of the character set forth, the combination with a rotatable turntable, of oppgsitely revoluble operating members therefor having their axes of revolution substantially coincident with the axis of rotation of the turntable, and means for connecting member.

21. In a machine of the character set forth, the combination with a rotatable turntable, of oppositely revoluble operating members therefor located below the turntable,

means for revolving the members simultaneously in oppo-.

site directions, and means for connecting the turntable to either member.

22. In a machine. of the character set forth, the combination with a base, of a turntable rotatably mounted thereon,

bands surrounding the base, means for revolving the bands' in opposite directions, and means for connecting the turntable to either band.

23.' In a machineof the character set forth, the combina-l tion witha base, having annular tracks, of a turntable rotatably mounted on the base, Abands surrounding 'the base, rollers carried-by the bands and operating respecl the turntable t'o either band.

tively on the dilferent tracks, means for revolving the 'bands in opposite directions, and means for clutching the turntable to. either band.

24. In a machine of the character set forth, the combination with a base, of a turntable rotatable thereon, bands surrounding vthe base and having gear teeth on their opposededges, a gear interposed between the bands and meshing with the teeth thereof, and means 25. -In a machine of the character set forth, the combination with a base, of a turntable rotatable thereon, bands surrounding theI base, means' for simultaneously revolving the bands in-opposite directions, clutch shoes mounted on the turntable, and means for engaging one of said shoes Vwith either band.

26. In a machine of the character set forth, the combination with a base, of a turntable rotatably mounted thereon, bands revoiubly mounted on the base below the turntable, means for simultaneously revolving said bands in op- .posite directions, a lever fulcrnmed between its'ends on the turntable, shoes carried by the lever on opposite sides of its fulcrum and eoaeting respectively with the bands, and an operating `levcr'fulcrumcd on the turntable and having connections with the shoe-carrying lever for operating thesame. l i

27. In a machine of the character set forth, the|combination with a machine frame, of a tubular base ymounted thereon. n turntable-rotatably mounted. on the upper end of the base and having a roller bearing thereonsaid base -ning onsaid tracks. said bands being provided in "their opposed edges with gear teeth, a sha-ft journaled in kthe base, means for rotating the shaft, a gear wheel carried by said shaft and meshing with the teeth 4of the bands, a depending bracket carried by the turntable, a lever fulcrumcd between its ends on 'said bracket, shoes carried by the lcvcr and cooperating respectively with the bands,.an operating leverv fulcrumed on the turntable, and connecltions between said operating lever and the shoe-carrying lever for swinging the same upon the swinging of the operating lever.

28. ln a machine of the character set forth, the combination willi-supporting means, of a mast having a rotatable hast-,1m upright spindle located above the base and having n bearing between its ends, and arms separately secured the turntable to either for clutching to the spindle above and below the bearings, said arms be- .ing `separately connected to the mast.

29. In a machine of the character set forth, the combination with a bed frame, of a cab mounted thereon and having a roof, a mast having` a rotatable support on the bed' frame, an upright spindle having a bearing in the roof of -the cab, and arms secured to the spindle above and below the roof, said arms being separately connected to different portions of the mast.

. 30. In a machine of the character set forth, the combination with supporting means, of a mast having a rotatable base, a substantially horizontal beam mounted above the base and including an upright boxing, an upright spindle having a roller bearing in the boxingand lseparate connections' between the spindle and mast.

31. -In a machine of the character described, the combination witiia rotatable support, of .a mast mounted thereon,` a boom pivotally mounted on the support, and means connecting the mast and boom for swinging the latter.

f 32. In a machine of the character set forth, the combination with a bed-framefof a turntable rotatable thereon, a mast iixed'to the turntable, a boom having its inner end pivoted on the turntable, and means connecting the mast and boom for swinging the latter.

` 33. In a machine of the character set forth, the combination with a mast, of a movable booml associated therewith, an operating member for the boom monntedon and movable longitudinallyof the mast, and a connection between said memberand boom. l f

34. -In a machine of the-character set forth, the combination with a mast, of a movable boom associated therewith, an operating cable for the boom mounted on and having a portion movable longitudinally of the mast, and aliiexible connection between said cable and boom.

35. In a machine of the character set forth, the`combinal tion with a mast, of a boom associated therewith, sheaves journalcd on -the end portions of the mast, an operating cable passing around the sheave, another sheave journaled on the upper portion of the mast, and a cable connected `to the boom, passing over the latter sheave and connected to the operating eable.

36. In a machine of 'the character described, the combination with a movable boom, of .means for moving the same said means including a rotatable sheave, an endless cable passing about the same, a connection between the cable and boom, driving means, and mechanism for clutch ing the driving means and the sheaveV together.

37. In a Imachine of the character described, the combination'with a' movable boom, of means for moving-the same, said -means including a rotatable sheave, an endless cable passing about the sheave, a connection between the cable and boom, a rotary driving member associated with the sheave, said sheavey and member having coincident axes ofrotation, and mechanism `for clutching the driving member and sheave together. V l

38. In .a machine of the character described, the combination with a movable boom, of means for moving`the same including a cable and a rotatable device that the cable lpasses around, a connection.between the cable and boom, a. driving memberfmeans for clutching the driving member and rotatable device together to move' the latter inpnedirection, and means for holding the device against rotation in an opposite direction when unclutched from the driving member.

39. In a machine of the charactery set forth, the combination with a movable boom, of means for moving the same including a cable and a'. rotatable device that thecable passes around, a connection between the cable and boomja driving member, means for clutching the driving member and rotatable devie together to move the latter in one direction, a ratchet wheel rotatable with the device, and a dogl .cooperating with the ratchet wheel for holding the device against rotation ln an opposite direction when unclutched from the driving member.

40. In a machine of the character set forth, the combinatlon-wlth a movable boom, of means for moving the same including a sheave, an endless cable passing about the sheave, a cable connection between the cable and boom, a driving wheel, means for clutching the driving wheel and sheave together to move the latter in one direction, n

' vnation with 'ratchet wheel connected to the sheave, and a dog coperprevent the retrogradel ating with the ratchet wheel, to rotation of the sheave when unclutched from the driving wheel. u

l41. In a machine of thecharacter set forth, the combi nation with a mast,of sheavesv mounted on the upper and `lower portions thereof, an 'endless cable passing about the sheaves, a swinging boom,

a cableconnection between the swinging boom and one of the stretches of the endless cable, a driving wheel loosely associated withfthe lower sheave and having a rim, clutch mechanism connected to the sheave and movable into and out of engagement with thevrim,

and a leverfor operating the clutchmechanism. 42. In a machine of the character 'set forth, the Acombination with a mast, of upper and lower sheaves journaled. thereon, an endless operatingcable'passing around the' sheave, a swinging boom having one end pivotally asso-l ciated with the mast,l a cable connection between `the 'boom' and the operating eable, a\h'ub carried by the lower sheave, a vdriving wheel looselyv journaled on the hub,

- clutch mechanism carried by the hub and movable into and out :o f engagement 'with the sheave thereto,

sheave, land a. dog associated with l.the ratchet wheel for the driving wheel to clutch a-. ratchet wheelirotatable withthe normally preventing'the rotation of the sheavein one d lrection when unciutched from the driving wheel.

43. lIn a machine of the character set forth, the combination with 4 a turntable, of"a` boo'm movabiy associated therewith, operating means for the boom mounted on the, turntable, driving-meansmavlng a'member 'mountedon the turntable.an'd-A means'm'ounted on the 'turntableu for Vconnecting and ldisconnectingthe operating means and driving member.

' '44. Ina machine of thegcharacter set forth, the combination with a support, of a turntable rotatable thereon,- a motor mounted on the support, a driving v'member mounted on the turntable and operated from the motor, a boom movably asscxciated with the turntable, operating means forthe boom'mounted on the turntable, fand lclutch mechanism mounted onthe turntable for connecting the driv` ingmember and boom operating means.-

45, In a machine of the-character set forth, the combi-l a support, of 'a turntable mountedl thereon, a driving shaft journaled on the support, a shaft journaled )centrallyof the turntable, connections between the shafts,

a boom 'movably associated with the turntable, and operating means for the boom drivenfrom the turntable shaft.

' nationwith a support,

' and connected to said boom,

46. In a machine of the character set 'ih n'th, the combi,- nation wlth'- .a support, of`a turntable mountedthereoma driving shaft journaled on the support, an upright shaft journaled on the, turntable, ldriving connections between the shafts, 'a'. boom movably associated with the'turntable;

and operating -means for the boom ldriven from and having a clutch lconnection with the upright shaft. 47.'. In a machine'of the 'character vset forth, the combidrlving shaft-journaled von the support, an upright shaft journaled .on the turntable, driving connections 'between t`he shafts, a swinging boom carried by the turntable, op

mounted o'n the turntable said means including clutch rerating means for the boom mechanism that is mounted on the turntable and* is geared nation4 with a turntable,- of a to the. upright shaft.

Il48. lIn a machine of the characterset forth, the combimast mounted thereon, a swinging boom also carried by the turntable, a sheave journ'aled on the 'lower end of the mast, a cable passing around the sheave and having a connection with the cable and boom, an upright shaft journaled o n the turntable, means for driving the shaft, a wheel geared to the shaft and associated withvthe sheave, and clutch mechanism for connecting said wheel and sheave.

' end of the mast, acable passing over' said sheave and counected to the boom and to the endless cable, an upright shaft journaled centrally of the turntagie. means for rofnation with a supporting boom,

. and boom, and means-for moving the of a turntable'mounted thereon, a.

.nation with a supporting boom,

tating the same, a driving wheel geared tosaid shaft and loosely associated' with the lower'. sheave, clutch -mechanism for connecting said sh'eave and driving wheel, ay

ratchet wheel rotatablefwith the sheave, and a dog for holding the ratchet wheel against movement in one direction when thesheaveds unclutched'from the driving wheel. f 50. In a machine of the character set forth, the combination withl a support, of a base secured to the" support, a` turntable rotatahlymounted on the'base, oppositelyirotatable bandsmounted-on the base, 'clutch shoes c arr'iedby 'l lthe turntable and movable .into coaction with the bands for rotating the turntable in opposite directions, a driving.`

shaft v lournaled on .the support, a countershaft iournaled` on the base and geared to the bands for rotating them in` opposite directions, Va mast carried by the turntable, -a swinging boom associated with the mast, upper and lower sheaves carried by the mast',- an endless operating cable passing around ,the sheaves, a connectionbetween the cable and "boom, an upright shaft journaled centrally of the turntable` and geared to the countershaft, a driving wheel .geared to said upright shaft and loosely associated with the lower sheave,;clutch mechanism for connecting the lower sheaveand'driving wheel, and" means for holding the lower sheave 'against retrograde, movement when unclutched from the driving 'wheeL v 51. In a-machine ofthe character set forth, the comb- .nation with asuppor-t, of material-holding means movably associated therewith, a plurality of yconnectionsv betweenthe holding means andjsupport, said connections being 'relatively movable onzthe support, and means foi-'effecting their -relative`movx'ment to tilt the holding means.

52. I n s I nachiy efof' the character set-forth, the combination with asupport, of material-holdingmeans movably associated therewith, a swinging connection between the holding means and support, and means 'for vmoving the holding means longitudinally on'the support to cause the i swinging movement of said connection.

53. In amachinerof the character set forth,i the combi'- nation with avsupportyof materiahholding means movably associated therewith, a swingingconnection between the holding means andv support, another connectionbetween' the holding means and support that is movable longitudinally of the latter, and mechanism for effecting said lon` i gitudinal movement'and thereby the swinging of the iirstv mentioned connection. 54;" In a machine `of `the character set forth, the combiof ashovel associated therewith, a swinging link connection between the shovel shovel longitudinally of the boom to thereby cause the swinging of the link.

55. In a machine of the'character set forth, th'e combination with a supporting boom, of ashovel associated therewith, a swinging link connection between the shovel andboom, and a carriage movable longitudinally on the boom and connected to the shovel.

56. In .a 4machine of the character set forth, the combinationwith asupporting boom, of a shovel, a swinging linkipivotally connected to the boom and-to the shovel, a carriage movable longitudinally on the boom, said carriage having a pivotal connection with theshovel, and means for moving the carriage'.A

i 5T. In al machine of the character set forth, the combi-A nation with a supporting boom, of a shovel having an open front end, a link pivotally-.connected to said front end and pivotal'ly connected ,to the boom, a carriage mov-- fable longitudinally .of said boom,

shovel and pivoted to the carriage, said linkl thereby cansand an arm xed tothe 59. In a machine of the character lset forthfkthe combitracks, of a frame nationwith a supporting boom having mountedA on the outer end of the boom, a shovel operating beneath the boom,a link connectionbetweensaid shovel and the frame, a carriage movable'longltudinally of the link pivoted to the.

l ing the carriage tothe member.`

boom and having rollersoperating on the tracks'thereof, means for moving the carriage longitudinally of the boom,

and an arm fixed to the'shovel. and having a pivotal con# nection with the carriage.

60. In a machine of thech'ara'cter set forth, the combi nation with a bed-frame, of-a turntable rotatablymounted thereon, a mast supported on the turntable, a boom/piv- -otally associated with the mast and turntable, means mounted onthe mast and-turntable for swingingy the boom, material holding means located 'at the outer end of the boom,- a swinging iink connection between the material.

holding means and the boom, acarriage .movable iongitu dinally on the boom, means for moving the carriage, and a pivotal connection between the material holding means Y and said carriage` 161. In a machine of the character set forth, the combination with a support, of a shovel movably 'associated therewith, an'd mechanism for moving said shovel with respect to the support, said mechanism including an operating member movable longitudinally on the support, and means for clutching the shovel 'to said member;4

G2. In a machine of the character set forth, the combination with ay supporting boom, of material-holding means movably associated therewith, and mechanism for moving said holding means, said 'mechanism including ,a cable movable longitudinally of the boom, and means for clutching the material holding means to said cable.

,13. In a machine of the character set forth, the combi;v

nation with a supporting boom, of material holding means associated therewith, amember movable longitudinally of the boom, a carriage movable longitudinally on the boom and connectedto the holding means, and means for clutch- 64.In a machineof the character set for-th, the combination with a supporting boom,-of material holdlngrmeans movably associated therewith, a. cable movable longitudinally of vthe. boom, a 'carriagefm'ovable longitudinally on the boom and connected to theholding means, and means for clutching' the carriage to the-cable. l

U5. In a machine of thecharacter set forth, the combination with a supporting boom, of material holdngmeans associated therewith, an operating member movable longintudinally'on the'boom, a carriage movable-longitudinally Y on the boom and connected to the holding means, means Tor clutching the carriage to thefmem-ber, and .means Vfor automatically unclutc'hing the carriage from' ythe member.

66. In a machine of 'the character vdescrli ed,the combination rwith a supporting boom, of material holding 'means movabiy associated therewith, an `operating cable movable longitudinally -of the boom, means for automatically operating the cable, means for clutching the holding meansv to ysame therefrom. n

the cable, and means forautomatically unclutching 'it/he 67. 'in a machine-ofthe character ser forth, 'the combination with a supporting boom, of'a shovel, a link connection between the shovel andboom, a cabl'e movable longi tudnaliy of the boom, means for operating the `cable, .a

carriage connected to'vthefshovehand clutch mechanism for.

connecting thecarriage tb the cable. f f

GS; In a machine of the charactersetforth, the combination wltha supporting boom, of a shovel, a link connec- Lion betweenthe shovel and boom, a cable movable longitudinally of the boom, means for operating the cable, a xcarriage connected to the shovel, and clutch mechanism movably mounted on the carriage for` connecting the same to'the cable. 1 f

693111 a machine of the character set forth, the combinatlonwith avsupportlng boom,' of a shovel associated therewith, a swinging link 'connection between the open end .of the shovel and the boom,a' 'carriage movable longitudinally on the boom, a' pivotal connection between the `shovel and carriage, a cablemovableiongitudinally of the boom, means 'for operating the cable," andclutch mechanism for connecting'rthe carriage to the cable.`

I 70'. Inja' machine of -the character'set forthfthe comble nation with asuppm'ting boom, of a shovel" associated therewith, a swinging linkl connection`between the open end of the shovel and the boom, a carriage movable longitudinally on the boom, a pivotal connection 'between`-the`A shovel and carriage, acable movable longitudinally of the boom, means for operating the cable; manually operated clutch mechanism for connecting the carriage to 'the cable, and automatic means for unclutching the carriage from the cable.

Tl'. In a machine of the character set forth, the combination with a supporting boom, of material holding means associated therewith, an operating member movable long' tudinally of the boom, a carriage connected to the holding lmeans and movable on the boom, and a clamping jaw movably mounted on the carriage and with the operating member. I

72. In a machine of the character set forth, the combination with a supporting boom, of material holding means movable into coaction associated therewith, an operating member movable longi- -movably mounted on the carriage and movable into c'oaction with the cable, and means mounted ony the boom for throwing the jaw into operation.

7i.V In-a machine' of the character set forth, the combination with a supporting boom, of a shovel associated therewith, a carriage movable on the boom and connected to the shovel, an operating cable extending and operating through the carriage, and a clamp movably mounted on -t the carriage and movable into and out of coaction with the cable.

75. In a machine of the character sety forth, the combic lnation with a supporting boom, of a shovel associated therewith, a carriage movable on thevboom and connected to the shovel, an operating cable movable longitudinally of the boom, means mounted on the carriageior clutching said movable carriage to the cable, and mechanism for operating the clutching means including a shaft disposed longitudinally of the boom.

` f 7G.. In a machine of the character set forth, the combination with a supporting boom, of a `shovel associated therewith, ay carriage movable on thel boom and connected to the shovel', an operating cable movable longitudinally of the boom, means mounted on the carriagefor clutching said movable carriage to -the cable, and mechanism for operating the clutching means including a rock shaft disposed longitudinally 0f the boom, means for throwing the with th shaft.

' '77. In a machine of the character set forth, the combination with a supporting boom, of a shovel associated therewith, a carriage movable on the boom and connected to the shovel, an operating cable on the boom, a' swinging clamp on the carriage, a rock shaft journaled on the boomand having a key-way, and a dog pivoted on the clamp and movable into the key-way. l

7S. In a machine of the character set forth, the combi-y nation with a supporting boom, of n shovel associated,

therewith,a carriage movable on the boom and connected to the shovel, an operating cable on the boom, a swinging clamp on the carriage, a rock shaft journaled on the boom, vand having a key-way, a dog pivoted on the clamp and movable into the key-way, and a lever having connectionswith the shaft for turning the same.

' 79. In a machine of the character set forth, thecombb nation with a supporting boom, of a shovel associated therewith, acarriage movably mountedon the boomand vconnected to the shovel, an operating cable movable on the boom, a swinging clamp mounted on' the carriage and cooperating with the cable, a -rockfshaft mounted on the boom and having a key-way, avdog movably mounted on the clamp and movabley into the key-way, and means for .moving the dog intothe key-way.

80. In a machine o f-the'character set forth, the comblshaft, and a dog carried by the clutch and interlocking nation /wlth a supporting boom, of a shovel lassociated therewith, a carriage movably mounted' on the boom'and 

